<span>The first common serious disease of the circulatory system is coronary artery disease.
The second common serious disease of the circulatory system is arteriosclerosis.</span>
The third common serious disease of the circulatory system is myocarditis.
They all coincide with each other although they are each individually important exercise and your diet are connected,you can't have too much food and run a marathon without cramping. Too much stress will have an effect on the consistency of your diet and your diet on your exercise, now heredity is a whole other realm, you cannot control that or change it. But if you are so worried about your heredity then you should seek counseling with a mentor or a paid counselor because that will affect all of your overall health.
Sex can have negative health consequences. Negative outcomes include, unwanted pregnancy, sexually transmitted infections, internal injury etc.